161622460400 has 60 divisors (see below), whose sum is σ = 388515294144. Its totient is φ = 64612800000.

The previous prime is 161622460399. The next prime is 161622460427. The reversal of 161622460400 is 4064226161.

It is a super-2 number, since 2×161622460400² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 608225 + ... + 832575.

Almost surely, 2^161622460400 is an apocalyptic number.

161622460400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161622460400 is an abundant number, since it is smaller than the sum of its proper divisors (226892833744).

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

161622460400 is a wasteful number, since it uses less digits than its factorization.

161622460400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226170 (or 226159 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 161622460400 its reverse (4064226161), we get a palindrome (165686686561).

The spelling of 161622460400 in words is "one hundred sixty-one billion, six hundred twenty-two million, four hundred sixty thousand, four hundred".