100400231245550 has 24 divisors (see below), whose sum is σ = 188457681779400. Its totient is φ = 39791651280480.

The previous prime is 100400231245429. The next prime is 100400231245579. The reversal of 100400231245550 is 55542132004001.

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, 9211024940 + ... + 9211035839.

It is an arithmetic number, because the mean of its divisors is an integer number (7852403407475).

Almost surely, 2^{100400231245550} is an apocalyptic number.

100400231245550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100400231245550 is a deficient number, since it is larger than the sum of its proper divisors (88057450533850).

100400231245550 is a wasteful number, since it uses less digits than its factorization.

100400231245550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18422060900 (or 18422060895 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 100400231245550 its reverse (55542132004001), we get a palindrome (155942363249551).

The spelling of 100400231245550 in words is "one hundred trillion, four hundred billion, two hundred thirty-one million, two hundred forty-five thousand, five hundred fifty".