261451114751454 has 8 divisors (see below), whose sum is σ = 522902229502920. Its totient is φ = 87150371583816.

The previous prime is 261451114751443. The next prime is 261451114751467. The reversal of 261451114751454 is 454157411154162.

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

261451114751454 is an admirable number.

It is a super-2 number, since 2×261451114751454² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 261451114751397 and 261451114751406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21787592895949 + ... + 21787592895960.

It is an arithmetic number, because the mean of its divisors is an integer number (65362778687865).

Almost surely, 2^{261451114751454} is an apocalyptic number.

261451114751454 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261451114751454 is a wasteful number, since it uses less digits than its factorization.

261451114751454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43575185791914.

The product of its digits is 2688000, while the sum is 51.

The spelling of 261451114751454 in words is "two hundred sixty-one trillion, four hundred fifty-one billion, one hundred fourteen million, seven hundred fifty-one thousand, four hundred fifty-four".