146640207467731 has 4 divisors (see below), whose sum is σ = 146671655082832. Its totient is φ = 146608759852632.

The previous prime is 146640207467671. The next prime is 146640207467749. The reversal of 146640207467731 is 137764702046641.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 146640207467731 - 2³¹ = 146638059984083 is a prime.

It is a super-2 number, since 2×146640207467731² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146640207461731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15723800556 + ... + 15723809881.

It is an arithmetic number, because the mean of its divisors is an integer number (36667913770708).

Almost surely, 2^{146640207467731} is an apocalyptic number.

146640207467731 is a deficient number, since it is larger than the sum of its proper divisors (31447615101).

146640207467731 is an equidigital number, since it uses as much as digits as its factorization.

146640207467731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31447615100.

The product of its (nonzero) digits is 28449792, while the sum is 58.

The spelling of 146640207467731 in words is "one hundred forty-six trillion, six hundred forty billion, two hundred seven million, four hundred sixty-seven thousand, seven hundred thirty-one".