361951611840 has 672 divisors, whose sum is σ = 1536929372160. Its totient is φ = 76135292928.

The previous prime is 361951611829. The next prime is 361951611863. The reversal of 361951611840 is 48116159163.

361951611840 is a `hidden beast` number, since 3 + 6 + 19 + 516 + 118 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 94084797 + ... + 94088643.

It is an arithmetic number, because the mean of its divisors is an integer number (2287097280).

Almost surely, 2^361951611840 is an apocalyptic number.

361951611840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 361951611840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (768464686080).

361951611840 is an abundant number, since it is smaller than the sum of its proper divisors (1174977760320).

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

361951611840 is a wasteful number, since it uses less digits than its factorization.

361951611840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4249 (or 4236 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 361951611840 in words is "three hundred sixty-one billion, nine hundred fifty-one million, six hundred eleven thousand, eight hundred forty".