15515441230 has 32 divisors (see below), whose sum is σ = 29688780960. Its totient is φ = 5821315200.

The previous prime is 15515441209. The next prime is 15515441231. The reversal of 15515441230 is 3214451551.

It is a junction number, because it is equal to n+sod(n) for n = 15515441192 and 15515441201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15515441231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385069 + ... + 423448.

It is an arithmetic number, because the mean of its divisors is an integer number (927774405).

Almost surely, 2^15515441230 is an apocalyptic number.

15515441230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15515441230 is a deficient number, since it is larger than the sum of its proper divisors (14173339730).

15515441230 is a wasteful number, since it uses less digits than its factorization.

15515441230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808644.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 15515441230 its reverse (3214451551), we get a palindrome (18729892781).

The spelling of 15515441230 in words is "fifteen billion, five hundred fifteen million, four hundred forty-one thousand, two hundred thirty".