101955501640 has 16 divisors (see below), whose sum is σ = 229399878780. Its totient is φ = 40782200640.

The previous prime is 101955501629. The next prime is 101955501643. The reversal of 101955501640 is 46105559101.

It can be written as a sum of positive squares in 2 ways, for example, as 94039128964 + 7916372676 = 306658^2 + 88974^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 101955501640.

It is not an unprimeable number, because it can be changed into a prime (101955501643) 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, 1274443731 + ... + 1274443810.

Almost surely, 2^101955501640 is an apocalyptic number.

101955501640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101955501640 is an abundant number, since it is smaller than the sum of its proper divisors (127444377140).

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

101955501640 is a wasteful number, since it uses less digits than its factorization.

101955501640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548887552 (or 2548887548 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 101955501640 in words is "one hundred one billion, nine hundred fifty-five million, five hundred one thousand, six hundred forty".