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91420146095 = 5173891051471
BaseRepresentation
bin101010100100100010…
…0001011100110101111
322201222020010121022212
41111021010023212233
52444212024133340
6105555311001035
76414322264115
oct1251104134657
9281866117285
1091420146095
113585331a953
121587450917b
13880c105805
1445d3775ab5
1525a0da0a65
hex154910b9af

91420146095 has 8 divisors (see below), whose sum is σ = 109710588480. Its totient is φ = 73131841440.

The previous prime is 91420146091. The next prime is 91420146109. The reversal of 91420146095 is 59064102419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91420146095 - 22 = 91420146091 is a prime.

It is a super-2 number, since 2×914201460952 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91420146091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438791 + ... + 612680.

It is an arithmetic number, because the mean of its divisors is an integer number (13713823560).

Almost surely, 291420146095 is an apocalyptic number.

91420146095 is a deficient number, since it is larger than the sum of its proper divisors (18290442385).

91420146095 is a wasteful number, since it uses less digits than its factorization.

91420146095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068865.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 91420146095 in words is "ninety-one billion, four hundred twenty million, one hundred forty-six thousand, ninety-five".

Divisors: 1 5 17389 86945 1051471 5257355 18284029219 91420146095